20 (火)	07:01	16:37	-	-
	98cm	23cm	-	-
小潮 出 04:30 入 18:12 出 09:47 入 00:55 潮干狩り ○ 15:25～17:57

コイセボイ（北海道）2021年04月20日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
4/20 00:00	50.4	↑0.8
4/20 00:10	51.3	↑0.9
4/20 00:20	52.2	↑0.9
4/20 00:30	53.1	↑0.9
4/20 00:40	54.1	↑1.0
4/20 00:50	55.2	↑1.1
4/20 01:00	56.3	↑1.1
4/20 01:10	57.4	↑1.1
4/20 01:20	58.6	↑1.2
4/20 01:30	59.9	↑1.3
4/20 01:40	61.1	↑1.2
4/20 01:50	62.5	↑1.4
4/20 02:00	63.8	↑1.3
4/20 02:10	65.2	↑1.4
4/20 02:20	66.7	↑1.5
4/20 02:30	68.1	↑1.4
4/20 02:40	69.6	↑1.5
4/20 02:50	71.1	↑1.5
4/20 03:00	72.7	↑1.6
4/20 03:10	74.2	↑1.5
4/20 03:20	75.7	↑1.5
4/20 03:30	77.2	↑1.5
4/20 03:40	78.7	↑1.5
4/20 03:50	80.2	↑1.5
4/20 04:00	81.7	↑1.5
4/20 04:10	83.1	↑1.4
4/20 04:20	84.5	↑1.4
4/20 04:30	85.9	↑1.4
4/20 04:40	87.2	↑1.3
4/20 04:50	88.5	↑1.3
4/20 05:00	89.7	↑1.2
4/20 05:10	90.8	↑1.1
4/20 05:20	91.9	↑1.1
4/20 05:30	92.8	↑0.9
4/20 05:40	93.7	↑0.9
4/20 05:50	94.5	↑0.8
4/20 06:00	95.2	↑0.7
4/20 06:10	95.8	↑0.6
4/20 06:20	96.3	↑0.5
4/20 06:30	96.7	↑0.4
4/20 06:40	97.0	↑0.3
4/20 06:50	97.2	↑0.2
4/20 07:00	97.2	0	満潮
4/20 07:10	97.2	0
4/20 07:20	97.0	↓-0.2
4/20 07:30	96.7	↓-0.3
4/20 07:40	96.3	↓-0.4
4/20 07:50	95.7	↓-0.6
4/20 08:00	95.1	↓-0.6
4/20 08:10	94.3	↓-0.8
4/20 08:20	93.4	↓-0.9
4/20 08:30	92.4	↓-1.0
4/20 08:40	91.3	↓-1.1
4/20 08:50	90.1	↓-1.2
4/20 09:00	88.8	↓-1.3
4/20 09:10	87.4	↓-1.4
4/20 09:20	85.9	↓-1.5
4/20 09:30	84.3	↓-1.6
4/20 09:40	82.7	↓-1.6
4/20 09:50	80.9	↓-1.8
4/20 10:00	79.1	↓-1.8
4/20 10:10	77.2	↓-1.9
4/20 10:20	75.3	↓-1.9
4/20 10:30	73.3	↓-2.0
4/20 10:40	71.3	↓-2.0
4/20 10:50	69.3	↓-2.0
4/20 11:00	67.2	↓-2.1
4/20 11:10	65.1	↓-2.1
4/20 11:20	63.0	↓-2.1
4/20 11:30	60.8	↓-2.2	最大潮位差
4/20 11:40	58.7	↓-2.1
4/20 11:50	56.6	↓-2.1
4/20 12:00	54.5	↓-2.1
4/20 12:10	52.5	↓-2.0
4/20 12:20	50.4	↓-2.1
4/20 12:30	48.4	↓-2.0
4/20 12:40	46.5	↓-1.9
4/20 12:50	44.5	↓-2.0
4/20 13:00	42.7	↓-1.8
4/20 13:10	40.9	↓-1.8
4/20 13:20	39.2	↓-1.7
4/20 13:30	37.5	↓-1.7
4/20 13:40	35.9	↓-1.6
4/20 13:50	34.4	↓-1.5
4/20 14:00	33.0	↓-1.4
4/20 14:10	31.6	↓-1.4
4/20 14:20	30.4	↓-1.2
4/20 14:30	29.2	↓-1.2
4/20 14:40	28.1	↓-1.1
4/20 14:50	27.2	↓-0.9
4/20 15:00	26.3	↓-0.9
4/20 15:10	25.5	↓-0.8
4/20 15:20	24.8	↓-0.7
4/20 15:30	24.2	↓-0.6
4/20 15:40	23.6	↓-0.6
4/20 15:50	23.2	↓-0.4
4/20 16:00	22.9	↓-0.3
4/20 16:10	22.6	↓-0.3
4/20 16:20	22.4	↓-0.2
4/20 16:30	22.3	↓-0.1	干潮
4/20 16:40	22.3	0
4/20 16:50	22.4	↑0.1
4/20 17:00	22.5	↑0.1
4/20 17:10	22.7	↑0.2
4/20 17:20	23.0	↑0.3
4/20 17:30	23.3	↑0.3
4/20 17:40	23.7	↑0.4
4/20 17:50	24.2	↑0.5
4/20 18:00	24.7	↑0.5
4/20 18:10	25.2	↑0.5
4/20 18:20	25.8	↑0.6
4/20 18:30	26.4	↑0.6
4/20 18:40	27.0	↑0.6
4/20 18:50	27.7	↑0.7
4/20 19:00	28.4	↑0.7
4/20 19:10	29.1	↑0.7
4/20 19:20	29.9	↑0.8
4/20 19:30	30.6	↑0.7
4/20 19:40	31.4	↑0.8
4/20 19:50	32.2	↑0.8
4/20 20:00	33.0	↑0.8
4/20 20:10	33.7	↑0.7
4/20 20:20	34.5	↑0.8
4/20 20:30	35.3	↑0.8
4/20 20:40	36.1	↑0.8
4/20 20:50	36.8	↑0.7
4/20 21:00	37.6	↑0.8
4/20 21:10	38.3	↑0.7
4/20 21:20	39.1	↑0.8
4/20 21:30	39.8	↑0.7
4/20 21:40	40.5	↑0.7
4/20 21:50	41.2	↑0.7
4/20 22:00	41.9	↑0.7
4/20 22:10	42.6	↑0.7
4/20 22:20	43.3	↑0.7
4/20 22:30	44.0	↑0.7
4/20 22:40	44.6	↑0.6
4/20 22:50	45.3	↑0.7
4/20 23:00	45.9	↑0.6
4/20 23:10	46.6	↑0.7
4/20 23:20	47.2	↑0.6
4/20 23:30	47.9	↑0.7
4/20 23:40	48.5	↑0.6
4/20 23:50	49.2	↑0.7